Thomas e



(No Model.)

T. E. DUDLEY.

OIL GAS STOVE.

No. 258,726 Patented May30,188Z.

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FIELZL Fig.3

WITNEEEEE INVENTU THOMAS E. DUDLEY, OF BOSTON, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO JOTT GRANT, OF SAME PLACE.

OIL-GAS SPECIFICATION forming part of Letters Application filed December 31, 1881.

T all whom it may concern Be it known that I, THOMAS E. DUDLEY, of Boston, in the county of Sufl'olk and State of Massachusetts, have invented certain new and useful Improvements in Oil-Gas Stoves, of which the following is a specification.

My invention relates to that class of stoves in which the oil used isconverted into gas and then burned as gas, the object being to get perfect combustion, regulation, and a safe and continuous supply. I attain these objects by the mechanism illustrated in the accompaying drawings, in which- Figure 1 is a vertical section of a stove with my apparatus applied. Fig. 2 is a detail in section, showing the device by which air is mingled with the gas at the place of combustion. Figs. 3 and 4 are details for showing the method of regulating the supply of oil.

In the drawings, Fig. 1 shows a section ofa stove, which may be of any suitable size and style. I prefer to cover the bottom of the stove with ashes, asbestus, or some non-combustible material, and also to provide a shallow dish at A for convenience in kindling.

B is an oil-tank, located in some convenient place, and connected to the generating device of the pipe 0 U.

The generator or retort consists of the pipes C C O O 0 0', Fig. 1. These pipes terminate with the pipe C, Figs. 1 and 2. At the lower end of the pipe 0, I make but a small opening, 0, so that the gas will be forced out in a concentrated rapidly-flowingjet. At con- 5 venient points 1? P P in the pipes I fix diaphr'agms L. (See Figs. 3 and at.) The object of these diaphragms is to provide a check on the flow of the oil, so as to prevent the accumulation of the same in the pipes.

0 If desirable, each of the diaphragms L may be provided with a screw-valve, L Fig. 4, so the orifice in the center can be contracted or enlarged at will.

My method of supplying air is embodied in the device shown at D D D D of Fig. 1, and part in detail enlarged at Fig. 2. This device consists of the leading-pipes D D, Fig. 1, the injector-chamber E, and the draft-pipes D D The injector-chamber E (see Fig. 2) has at its inlet end a diaphragm, E, (shown in section at S,) which has atits lower side an opening, H. The chamber also has a diaphragm, E, at the outlet end, (shown in section at S,)

STOVE.

Patent No. 258,726, dated May 30, 1882.

(No model.)

with its opening H at the top. By this arrangement the air will flow in through the 5 opening H, past the lower end of the pipe 0 (see Fig. 2,) and thence out through the opening H--that is, a supply of air is constantly furnished to be drawn down by the injector action of the jet of gas that flows from the opening 6.

M, Fig. 1, is a flat disk, located immediately under both the orifice Kof the chamberE and the outlet e of the gas-jet. The object of this disk M is to distribute any oil that may drop 6 from the opening 6, which sometimes occurs when the flame is first started.

The operation of my device is as follows: A small quantity of oil is allowed to How from the tank B into the pipes that constitute the generator or retort, after which a kindling-fire is made in the pan A This fire heats the oil in the generator and converts it into gas, which is forced out through the opening 0, and thence through the pipe K, Figs. 1 and 2. In the 7 passage of thcjet of gas from 6 through K it takes along with it a current of air from the chamber E. As soon as this actionis fully established the gas ignites and the kindlingflame in the dish A is allowed to burn out, it being no longer required, as the flamefrom the gas generated will keep up an ample supply, and a perfect combustion is maintained so long as the oil is allowed to flow. When once start ed, the amount of gas generated may be regulated by regulating the amount of oil that is allowed to flow into the generator. The diaphragms L serve to prevent any excess of oil getting into the generator.

The apparatus part regulating the flow of the oil consists of adiaphragm, L, as shown at Fig. 4, and a screw, L which serves to contract the single opening made in the diaphragm L. The general flow from the reservoir is also controlled by an ordinary hand- 5 valve.

Having thus described my invention, what I desire to secure by Letters Patent is- The combination of the generator 0 G 0 0 O (3 0 with the air-chamber E E E andori- 10o fice 6, arranged to operate substantially as described, and for the purpose set forth.

THOMAS E. DUDLEY.

Witnesses:

HELEN M. FEEGAN, WILLIAM EDsoN. 

